Allis Chalmer's fuel cell-powered farm tractor, circa 1959. This is the earliest known vehicle application of a fuel cell. Historical accounts indicate the 5,270 lb tractor required no additional weights, but the stack, made up of 1080 individual cells, produced only 15kW or about 20 horsepower. It was fueled with a mixture of gases, but predominately propane.
Edited by mjodrey, August 27, 2010 - 11:34 AM.